Planar structure is shown by

Options

A. `CO_3^(2-)`
B. `BCl_3`
C. `N(SiH_3)_3`
D. All of these

Answer

D

Explanation

C in `CO_3^(2-)` and B in `BCl_3 " are " sp^2` hybridised thus acquire planar geometry. Although N in `N(SiH_3)_3` is `sp^3` hybridised but the steric hindrance caused by three bulky groups make it planar for higher stability.